Matrix-bar for machines for making type-bars for printing.



No. 640,867. Patented Ian. 9, I900. F. E. BRIGHT.

MATRIX BAR FOR MACHINES FOR MAKING TYPE BARS FOR PRINTING.

(Application filed Oct. 13, 1896.)

(No Modal.)

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UNITED STATES PAT NT ()FFICE.

FRED EUGENE BRIGHT, OF CLEVELAND, OHIO.

MATRIX-BAR FOR MACHINES FOR MAKING TYPE-BARS FOR PRINTING.

SPECIFICATION forming part of Letters Patent No. 640,867, dated January 9, 1900. Application filed October 13, 1896. Serial No. 608,722. (No model.)

To all whom, it may concern.-

Be it known that I, FRED EUGENE BRIGHT, a citizen of the United States of America, residing at Cleveland, Ohio, have invented certain new and useful Improvements in and Relating to Matrix-Bars for Machines for Making Type-Bars for Printing, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to matrix-bars for machines for setting type-matrices and casting lines of type from such matrices.

The said invention also provides improved means for facilitating the removal and replacement of said bars from and on the suspension-wires.

In the accompanying drawings, Figure 1 is a view of a portion of my improved matrixbar and of a device for stamping the matrix and for forming a datum-notch inthe bar, as hereinafter described. Fig. 2 is a perspective view, on a smaller scale, of two matrixbars on the supporting-wire and illustrates the mode of removing the bars from said wire.

It will be understood that in the class of machines to which this invention relates it is necessary that the lower ends of the matrixstructing such matrix-bars to utilize the end of the bar or some already-shaped portion thereof from which to measure or determine the position of the-matrix; but as the amount of metal that is spread or displaced at the stamping of the matrix varies considerably with difierent characters or signs it has been impossible to so stamp the matrices that the center of each character or sign is at the same distance from the end of its matrix-bar.

Now according to my invention in order to insure the required accuracy in the formation of the bars I proceed as follows-that is to say, I stamp in the face of the bar at the same time that the matrix is formed therein a notch M, Fig. 1, by means of a device N, which contains a die P for forming the matrix in the matrix-bar and a chisel-shaped tool 0 for forming the notch M. It is obvious that the die P and chisel 0 may be formed in one piece, if desired. The distance between the die P and the chisel-point O is constant. By stamping the datum-notch at the same time as the matrix and at a very short distance therefrom I prevent the occurrence of any inaccuracy due to spreading or displacement of the metal, as above mentioned.

Insome instances the notch M is formed first and then is used as a means for determining the relative position of the matrix, the distance between the said notch and the matrix being so small as to render any displacement, due to spreading of the metal under the stamping action, so minute as to be negligible. I prefer, however, in all cases to form the notch and the letter or sign at the same time and in one operation.

The notch M serves as the datum-mark from which the distances to the upper and lower faces of the hooked part h of the matrixbar are measured, and by the aid of a templet or gage applied to this datum-mark the relative position and shape of the lower end of the matrix-bar can be accurately tested. When the ends of the matrix-bars are shaped in a milling-machine, the notch M serves as a datum-mark for use in setting the bars.

- In machines of the class to which this in vention relates the matrix-bars are supported or suspended on suspension-wires carried in the framing of the machine. It is often necessary or desirable to remove and replace the matrix-bars from and on such wires; but heretofore it has been impossible to do this without detaching at least one end of the suspension-wire from the frame. My invention provides means whereby this disadvantage is overcome and whereby any or all of the bars on a wire may be readily removed therefrom or replaced thereon without disturbing the said Wire.

According to my invention the matrix-bars H are formed with loops H, Fig. 2, at their upper ends, adapted to hook on the suspen-' sion bars or wires L. I make the opening H in the loop H smaller than the diameter of the suspension-wire, so that the matrix-bar cannot be taken off except at one place, L, where the wire is made thinner by a flattened or grooved portion being formed on or in it. The said flattened or grooved portion is formed in such a position that the matrixbar must be raised, as indicated by the left bar in Fig. 2, before it can be removed. Any one of the matrix-bars H on the Wire L can be removed and replaced instantly at the place L Without disturbing the other bars on the same Wire, and it is practically impossible for the matrix-bars to become accidentally unhooked.

What I claim is- 1. In a typograph or other linotype-maohine, a matrix-bar having a datum-notch formed therein at a predetermined distance from the matrix, said notch being independent of the alining notch, and serving to facilitate the accurate formation of the bar.

2. In a typograph or other linotypemachine a matrix-bar hooked at its lower end and having a datum-notch formed therein at a known distance from the matrix to facilitate the accurate formation of the bar, substantially as described.

v 3. In a typograph or otherlinotype-machine pension-wire being thicker than the'width of the opening in the loop and having a flattened or grooved portion to allow the matrix-bar when tilted to bring its opening opposite the flattened portion of the wire to be removed and replaced, substantially as and for the purposes described.

4. In a typograph or other lin0type-machine, the combination of a matrix-bar looped at its upper end and having an opening in the loop, and a suspension-wire for said bar, said wire being thicker than the width of the opening in the loop and having a flattened portion which will allow the matrix-bar to be removed and replaced when said bar is tilted to bring its opening opposite said flattened portion, but will not permit such removal or replacement while the bar is in its normal suspended position.

In testimony whereof I have hereunto set I my hand this 9th day of September, 1896.

FRED EUGENE BRIGHT.

Witnesses GEORGE HARRISON, Jn'rnno' MARSH. 

